Effects of shrub encroachment on soil organic carbon in global grasslands

doi:10.1038/srep28974

	Effects of shrub encroachment on soil organic carbon in global grasslands
	Li, He 1; Shen, Haihua ; Chen, Leiyi ; Liu, Taoyu 1; Hu, Huifeng ; Zhao, Xia ; Zhou, Luhong 1; Zhang, Pujin 2; Fang, Jingyun3,4
	2016
发表期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
卷号	6
摘要	This study aimed to evaluate the effect of shrub encroachment on soil organic carbon (SOC) content at broad scales and its controls. We conducted a meta-analysis using paired control data of shrubencroached grassland (SEG) vs. non-SEG collected from 142 studies worldwide. SOC contents (0-50 cm) were altered by shrub encroachment, with changes ranging from -50% to + 300%, with an effect size of 0.15 (p < 0.01). The SOC contents increased in semi-arid and humid regions, and showed a greater rate of increase in grassland encroached by leguminous shrubs than by non-legumes. The SOC content decreased in silty and clay soils but increased in sand, sandy loam and sandy clay loam. The SOC content increment was significantly positively correlated with precipitation and temperature as well as with soil bulk density but significantly negatively correlated with soil total nitrogen. We conclude the main effects of shrub encroachment would be to increase topsoil organic carbon content. As structural equation model revealed, soils properties seem to be the primary factors responsible for the extent of the changes, coarse textured soils having a greater capacity than fine textured soils to increase the SOC content. This increased effect appears to be secondarily enhanced by climate and plant elements.
学科领域	Multidisciplinary Sciences
DOI	10.1038/srep28974
收录类别	SCI
语种	英语
WOS关键词	WOODY PLANT ENCROACHMENT ; ECOSYSTEM CARBON ; RESPONSE RATIOS ; N STORAGE ; LAND-USE ; NITROGEN ; DYNAMICS ; METAANALYSIS ; INVASION ; SEQUESTRATION
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000379237100001
出版者	NATURE PUBLISHING GROUP
文献子类	Article
出版地	LONDON
资助机构	National Basic Research Program of China on Global ChangeNational Basic Research Program of China [2014CB954001] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31330012, 31470525] ; Strategic Priority Research Program of the Chinese Academy of SciencesChinese Academy of Sciences [XDA05050300]
作者邮箱	jyfang@urban.pku.edu.cn
作品OA属性	Green Published, gold
引用统计	被引频次：59[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/25164
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inner Mongolia Prataculture Res Ctr, Hohhot 010031, Peoples R China 4.Peking Univ, Coll Urban & Environm, Dept Ecol, Beijing 100871, Peoples R China 5.Peking Univ, Key Lab Earth Surface Proc, Minist Educ, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Li, He,Shen, Haihua,Chen, Leiyi,et al. Effects of shrub encroachment on soil organic carbon in global grasslands[J]. SCIENTIFIC REPORTS,2016,6.
APA	Li, He.,Shen, Haihua.,Chen, Leiyi.,Liu, Taoyu.,Hu, Huifeng.,...&Fang, Jingyun.(2016).Effects of shrub encroachment on soil organic carbon in global grasslands.SCIENTIFIC REPORTS,6.
MLA	Li, He,et al."Effects of shrub encroachment on soil organic carbon in global grasslands".SCIENTIFIC REPORTS 6(2016).

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